Home › CDL Practice Tests › Air Brakes Questions › Question 193
What should you do during a stop after a hard descent if the brakes are very hot?
- A.Pour cold water on the drums to cool them quickly
- B.Leave immediately while the linings are still hot and soft
- C.Block the governor so pressure stays high while parked
- D.Park safely, let the brakes cool before relying on them again, and inspect for smoke, odor, damage, or a dragging brake
Correct answer
D. Park safely, let the brakes cool before relying on them again, and inspect for smoke, odor, damage, or a dragging brake
Why
Sudden cooling can crack hot drums, and driving again before temperatures fall means starting with brakes already close to fade. A cooling pause plus a look for the reason one brake may have worked harder protects the next leg of the trip.
Manual topic: Air Brakes - Brake Fade and Heat · From the Air Brakes practice bank (AB-193).